Radiopaque Polyurethanes Containing Barium Sulfate: A Survey on Thermal, Rheological, Physical, and Structural Properties

Radiopaque Polyurethanes Containing Barium Sulfate: A Survey on Thermal, Rheological, Physical, and Structural Properties

Radiopaque polyurethanes are extensively used in biomedical fields owing to their favorable balance of properties. This research aims to investigate the influence of particle concentration on various properties, including rheological, radiopacity, structural, thermal, and mechanical attributes, with...

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Bibliographic Details
Published in:Polymers Vol. 16; no. 21; p. 3086
Main Authors: Júnior, Heitor Luiz Ornaghi, Duchemin, Benoit, Azzaye, Sanae, Soares, Márcio Ronaldo Farias, Schneider, Bárbara, Romoaldo, Carlos Henrique
Format: Journal Article
Language:English
Published: Basel MDPI AG 31-10-2024
MDPI
Subjects:
Absorption spectra
Amorphous materials
Atoms & subatomic particles
Banded structure
Barite
Barium
Barium sulfate
Biocompatibility
biomedical applications
Biomedical materials
Cytotoxicity
Density
Fibroblasts
Fourier transforms
Iodine
Mechanical properties
Nanoparticles
Polymers
polyurethane
Polyurethanes
Radiopacity
Rheological properties
Rheology
Software
Spectrum analysis
Storage modulus
Urethane thermoplastic elastomers
Viscosity
X ray microtomography
X-rays
Brazil
United States > US
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Summary:Radiopaque polyurethanes are extensively used in biomedical fields owing to their favorable balance of properties. This research aims to investigate the influence of particle concentration on various properties, including rheological, radiopacity, structural, thermal, and mechanical attributes, with a thorough analysis. The findings are benchmarked against a commercial product (PL 8500 A) that contains 10% weight barium sulfate. Two more thermoplastic polyurethanes (TPU) were formulated with two different concentrations of barium sulfate (10 wt.% and 20 wt.%) and compared to the commercially available product. FTIR demonstrated similar absorption bands among all samples, indicating that the fabrication method did not impact the TPU matrix. DSC indicated a predominantly amorphous structure for PL 8500 A compared to the other samples, while the kinetic degradation was more influenced by the higher barium sulfate content. The rheological analysis showed a decrease in the complex viscosity and storage modulus with the radiopacifier and an increase in the radiopacity, as demonstrated by the X-radiography. X-ray microtomography showed a more spherical particle format with a heterogeneous particle structure for PL 8500 A compared to the other polyurethanes. These findings enhance the comprehension of the structure–property relationships inherent in these materials and facilitate the development of customized materials for targeted applications.
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ISSN:2073-4360
2073-4360
DOI:10.3390/polym16213086